ernst



V. H,4 ERNST.

MILLING' MACHINE.

(No Mofrel.)

@Patented May.4,'1886.

(No Modl.) efsnethsheet 2.

I vV. LH.- ERNST.

MILLING MACHINE.

Patented May 4, 1886.

(No Model.)

e sheets-sheet s V.H. ERNST.J MILLINGMAGHINE.

Patented May 4, 1886.

bwa; da;

gangp- (No Model.) 6- sheets-sheet 4 V. H. ERNST. MILLING MACHINE. 'No.341.437. Patented' May 4, 1886;

` .L9-nains "site i' Vieron n. nnns'r, or Jnnsnr'oirr, NEW.innsnic'nssicnon To THE BROWN a sehnen trannnacrcniuc coMrANY, onPnovinnncn, i.

iViiLLiNG-MCHENE..

Application led November i7, 18x13. Serial No. 112.121.

(No model.)

To all whom it may concern,.-

Be it iinownthat L Vieilles E. ERNST, taciti-4 zen of the United States,and a resident cf Jersey City, in the county of Hudson and State 5oilNew Jersey, have invented. certain new and useful improvements inlvi'illing-lvachines, of which the following is a full, clear, landexact description, reference being'had to the dra-wings accompanying thesame, and constituting a part of the specification.

This invention relates, generally, to that class of machines in `which arotary cutter or milling-tool is employed for reducing or impartingcertain coniigurationscr cuts to metal ar- :5- ticles, appliances, ordevices that are held in the machine and fed under such rotatingcutteror tool, and particularly to that class of machines patentedFebruary 21, i865, No. 46,521,

which, by reason of the great variety'of uses which they are adapted,are technically known als universal milling-machines.

vThe pre-sent invention is directed to certain improvements on thisclass of machines, where-v by their-capacity is increased, theadjustment of the articles operated upon is'rfacilitated, and. theiroperation rendered more effective and per" ct. l n The traf-provenienteconsist, among ether things, ci a novei head-stock, combining, with heordinary movement of its spindle' by a Aworin and' worm-wheei, meanswhereby said spindle may be -moved independent-ly of said worin andworin-wheel; of a head-stock the spindle cf which may be operated byeither embracing a novel construction of the parts for connecting anddisconnecting each of the inflexing mechanics-is to and from saidspindle;

' of a novel mea-ns for securingtlie lspindle in the cnt improvements,certain portions being broken away to show some of its interiorcoustruction. l Fig. 2 is aside elevation thereof, the main spindle andits ini mcdiateconnections is a front elevation of the head-stock.

of two independent indexing mechanisms, and .A

from the feed-table.

being shown in section, and sonic of the gears connecting the feed-screwwith the Wormshait of the indexing-head and the direct indexplate beingomitted. Fig. 3 is a plan 'View of the milling-machine complete. Fig. 4is an enlarged side elevation of the head-stock,partly 55 in section,showing particularly the'worm- .shaft of the slow or indirect indexingsystem,

its construction and connections, and the connect-ions with thefeed-screw shaft by which the spindle is automatically rotated. ,.Fig. 563 rig. eis a Vertical section off thesame, taken onthe linea: of Fig.4., showing Aparticularly the relation of the bevel-wheel to theworm-shaft for automatically rotating it. Fig. 7 is a lon- 65 gitudinalvertical central section of vthe headstock, italien on the line y ofvFigs. 3 and 4, showing particularly the construction and ar` rangementof the'spindle, its worm-wheel, and immediate connections. Fig. 8represents by 7c a central section the worm-wheel, the retaining-nut ofthe head-stock spindle, and the nut for clutchingthe worm-wheel to thespindle: separated from each other.` Fig.9.is a rear elevation of theworm-wheel, and Fig. 10 a sectional View of the same, taken on theline wof Fig. 9. Fig. 11 is an end elevation of the retaining-nut ofth'e'head-stock spindle. Fig. 12 is a central sectional elevation ofthefoot :or trail stock, the cnd vof 'the'ieedtable., its Se feed-screwshaft, audits driving bevel-wheel. Fig. 13is an end elevation of thesame, the adjnsting=screw of the tail-stock spindle be-A ing in section;and`Fig. 14 is a cross-section of the feed-screw shaft and its clutch'detached 85- Fig4 15 illustrates the compressible key detached fromlthe spindle.'

Fig. 16 isa central verticalsection 'of a por-v tion of theelevatingcarriage, showing particularly the cross-feed screw-shaft andits 9o front bearing; and Fig. l17 vis au elevation Aof a spring-chuck.

rlhe milling-machine, as illustrated by Figs. l, 2, and 3, Awill ybeseen,y broadly considered, to he of the same generalconstruction and ar-95 rangement as these now well known in the art. It consists, as hereinshown, of a rectangular column or standard, lfproyided on its verticalface with a dovetail the elevating-carriage guide, 99, by which 9Sf`issupported and too tions-formed on the enich ll2;bywhich 'the letter isguided vertically, so that its engaging renr of Vthe yoke 45, and saidstud is provided with e. thumb-piece or .operating-disk, 9, by which itmay be turned to disengage it from the yoke in the adjustment necessaryto im part a spiralmovement totheworlc.

The shaftfii) will ordinarily rotate by'lifting the pawl 42 out ofengagementwith the indexplote independently of the sleeve 46 auditsbevel-wheel 24; init when this mechanisml is adj ustedtoa'utomaticsllyimpart a spiral movevment 4to the article heilig milled,aided therein hy the lateral feed-movement oi' the table 90,

this' shaft, sleeve, and bevel-wheel will -be cou pled together nyreleasing the yoke 45 from its fixed position secured bytheholdtaststud, and allowingl the p11-wl 42 to remain engaged with 4a.notch in the index-plete 78, as-will be apparent. y j I Theworm-whee123, which the worm 22 eil'- gages, (see Figs. 7 ond 8,) isprovided with a. conical central bore, und is mounted on e like- `shapedhub projeetingfrom the retaining-nut 76 on the spindle 74,- and isclutched thereto so that its rotations are imparted to the latter byenut, 57, which engages with screw-threads provided on the end of saidhub. This hub of theretaining-nut 76 is preferably divided, so as to4form elastic sectinsextending from iis rear, andl has an annular recess,17, byl

- mitted thereto, from the pulley 52 on the meiny which greaterelasticity is imparted thereto, so that when the nut 57 is screwedthereon it will bind seid sections firmly upon the spindle and leek thenut thereto.

The rapid indexing mechanism is provided by'mounting an index-plete, 39,ou the rear' end of tix/e spindle 74, and n springlseated pewl oreet-ch, 3S, thatl takes into serrations or notches in the periphery ofsaid indexplate. This index-plete 39 consistsof en an.

nulnr plate fitted onto a eireularwshonlder provided on e hub, 37,- nndsecured thereto bye. stedy-pin end set-screws, so that the indexplate inhse may he readily removed and replaced by e similar plate havingdiiierentlygraduated notches wit-hout removing the hub from the spindle.v

The pewlI or catch 3S is similar to the one 42, and needs no furtherdescription. ,Y

There is provided, as is usual,4a' mechanism to the iced-'screwsheft80101 causing the feedmble ihto trevgerse underthe milling or cnt- ,tingtool. .This is effected by n pulley-driven' shaft, 59, (see Figs. 2audl3,) that issupported in the ends of arms 5S, motion beingtransspindle. l At one of the bearings of this shaft 59 it is prox-'idedwilli a device for preventing its eudwiso motion and permittingadjustment,

which' consists of n1-sleeve having n hub, 35.

that4 rests against oner side of thenrm 5S, und having a set-screw forsecuring it to the shalt, and the other end of the sleeve hns s init,-3i', bearing against the opposite side of the arm. A n extensible shdft,110, couples the shaft 59 to the'shat't I OJhynicons of universeljoints. The shaft 109 carries :t spur-pinion, 33, that en?,

gages with and drives n. bevel-svheel, 111, se-

cured to the end of n sleeve, 30, mounted upon.

the feed-screw shaft 80. (See Fig. 12.) This feed-screw shaft is hollowfor s short distance', and' supports within'it a. short shaft, 32,' thatis secured by screws 2, that passthrough slots 3 therein .to esleeve,31, mounted on the hollow portion, of seid screw-shaft, and form,- ingone member-the sliding one-foie clutch, whichusleeve is' splined vto thescrew-shaft (see Fig. 14) so as to revolve therewith, .while thev otheror fixed member of the'eluteh is formed by the sleeve 30. Lateralsliding movement is imparted tothe shaft 32 end.l its' member oi' theclutch,so as to couple and' unf-'1J couple the bevel-wheel 111 to andfrom'i-Jh'e4 serew-shaft SOhy menus of a'n erm', 28,1511)- jecting fromand-adjnstably mounted on'oj shiftingrod, 113, which is mounted to slidein hearings 27, projecting from the frontof thev feed-table, and extendstheret toward the hendsmek 70, (see Fig. 3,) and at its endl is providedwith a. pivoted hond-lever, 26', one

end of which lever,of globular formds seated in :3. depressed seat`provided in the front of the feed-table. In order to accomplish thelateral movement ofthe shifting-rod sut'ometicnlly, itis provided 'withan adjustable rod arm, 15, edj ustnbly fixed thereon bye thumb 'Y screw.In connection 'therevvithdhe ,swivelplate 92 is provided with a pvoted.,dog, 14, vwl1'ieh,when in its operative position, .(showu in fulllines in Fig. 1,) will be met by tliearm i 1.5 during themovementoffeed-,table 90, thus 'arresting' the movement of the shifting-bar,which, :is the feed-table moves a `slight distance i'airthenwill resultin'diseonneeting the clutch,

and thereby stop the lfurther onward' movement of the table. Y g l l Theshifting-bar 113, mounted in the menner described, presents manyfeaturesA of improvement over that usually employed, in theft'l j 4it issupported away and ontof contact with the feed-table instead of beingheldin e groove formed .in its front side, whereby its movements incoupling and' uneouplingr the clutch will not loe impeded by ennceumulotionok grit and chips from the machine.

The pivoted dog, it may be remarked, when themovement of the feed-tableis reversed by g hand, will he turned into the position shown r indotted lines in Fig. 1, so that the arm 15', whatever its' position maybe on the shifting- .bar, will not come in eontact with saiddoggyl and,furthermore, instead of thus pivoting the dog 14 so that rit' can beadjusted out of operative pos1tion",""the arm 15 may he provided rigowith an elongatingthlmble, so that the length esatta tween the vhead andlail 'stocks by suitable holding devices with which said stocks areprovided, so that it will be caused to turn upon the foot-stock centerrevolved by the spindle 74 when it is rotated, as is well understood. Acutter or milling-tool of the desired shape will be scared upon thearbor l, and an indexplate,78,having the required subdivisions, l willbc secured in place upon the Shaft 49, so

pinion 111. 3S

as to be engaged by the pawl '42,whoseearrying-yoke is fixed in itsvertical position by the holdlaststud l-l. Upon rotating the shaft ot'the main spindle appropriate motion will be communicated to the shaft59, and thence to one member of the clutch through pinions 33 lll. rIhefeed-table having been adjusted vertically byits elevating mechanism,crosswise by its erossi'efed mechanism, and laterally through the mediumof a handle, S2, Figi 1,

Vfthe article to be milled will be in proper relative position to beacted upon by the'revolving' milllngtool or cutter. The shiftingbarllwill then be moved so as to cause the mov ing member of the clutch tobe coupled to said Thereupon the-feed-screw shaft and motion imparted tothefeed thereby carrying the article to be milled and in contact withthe rotating milling- The feed-table will continue to move is rotatedtable, under tool.

i until its arm 15 abats againstthe dog 14, (the position of said arm onthe shifting-bar having been adjusted so as to come in contact with thedog 1.4 when the milling-tool had completed its cut,) and thus canse theshifting-bar to be shifted, the clutch uncoujjiled, and the onwardmovement of the feed-table arrested.

The feed-table is then brought back toits j starting position byrotating the handle 82. The index-plate 78 will then be partiallyrotated, after temporarily lifling the pawi 42, and impart a similarmovement to the shaft 49 and worm 22, and through-the worm-wheel 23 tothe spindle 74,whereby the Workfis like wise rotated an appropriatedista-nee to prelsent a near snrfaceto be acted upon, determined by `themovement of said index-plate, which position will be secured andindicated b y the pawl engaging a properinotch. The shifting-bar 1l3 isthen shifted to couple the clutches, as ation will be repeated until thedesired number of cuts have been formed in the work operated upon. f

llhen it is desired to form spiralcuts in the work, theworm shaft 49will be caused to rotate continuously, whereby the work is similarlymoved in add-itionto the lateral feeding movement before described.l'This continuons beforevdescribed, when the operrotaticn is accomplishedby providing n bevelwheel, 25, mounted within the bracket llli inengagement with the bevelwheel 2l, before described. The shaft of thiswheel 25 is provided wtha wheel, i524, (seo-Fig. 6,) which receivesmotion from a wheel, l20, secured on the feedserew shaft 80, (see Fig,4,) through a pair of intermediate wheels, 121 122, and a singleintermediate, 12S, from willich it will be seen that simultaneously withthe lateral movement of the feed-table imparted through y the 'eedserewshaft S0 said 'screw-shaft will, through its wheel 120, intermediates12i `122 123, wheel 124., and bevel-wheels impart a continuons movementto the wormshatt 49, and through the worm 22 and wormwheel 25S to thespindle 74. ln this operation, however, instead of removing the indexplate 78, which has no function during the formation of the spiral cnt,(further than that after each cut it is rotated to move the articlebeing ent the distance y required between each cut,) the yoke l5 and itspawl 42 will be released bywitlulrawing the end of the holdfast-stud lllfrom engagement therewith, so that said yoke will be free to move withthe index-plate, the bevel-wheel and the shaft 49 together, and thusimpart the automatic relations of the former to said shaft.- thespindle, effected in this manner or in the manner previously described,the index-plato 39 may be either removed from its hub, or its`engaging-pawl 88 may be rendered inoperative. Yet it may be observedthat during the operation of the spindle 74, previously described,wherein the indei'zplate 7S is employed to rotate the same, saidindex-plate 39 may be also used as a tally to the rotation During therotations of 25 vand 2i,

IOC'

of vthe indexplate 78, so that any error in.

moving the latterl will be'detected by'noting the movement ot'. theplate 3i?. ln auch .case the serrations, notches, or subdivisions on theplate 39 will besuch as to correspond to the movement of the spindle74;, imparted by the worm and, wheel, as is apparent.

, In rapid indexing, wherein a single revolution of the index-plate willlikewise ooniplete it supports, the worm 22 will be rendered inoperative and ont 'of connection with said spindle by loosening the nut5.7, (seeFigs. 7 and 8,) so as l from the spindle or cause said wheel tobe. come loose on the conical seat of the heb of the retaining-nut 76,and thus enable the spin-A dle to be rotated step by step through itsindexplate 89. In thus rendering the indirect indexing mechanismjustment ofthe parte will he necessary, as, by

`reason of the conical seat upon which the worm-wheel 23 is held by thenut 57, by simply loosening said nut the worm-wheel will naturallyfollow the nut, and thus when the spindle, and with it the4retaining-nut, is re,

volved said wornl-wheel willv remainidle. The unt 57, it mayheobservem-'will be prea revolution of the spindle and the workk tonnclut'ch the worin-wheel 23" inoperative no other ad .ventediiroinworking olii Afrom the end of the split sleeve of the reteini `37oi` the index-plate 3 While thedirec't index iig-not 76 bythe hub 9, ae.will be readily plate will in pracvtice' ilo employed to impart thedirect rotetions or direct partial rotations to the opindlc 74, the'letter moy be provided otite reef end with al crank for eo doing.

for clutching the Worin-wheel and spindle to-l it ie apparent that theymay be gether, 'ee modified in wear which may occur worm 22 and the thelatter is 114 Harige. e

ilnit myself to` the specific ineens ronny particolare. For the purposeo com divided eo as to means for readily adjusting 2o to each othe and vet permit the per pensati-ng for any between the teeth of the teeth ol'the wormwheel 23,

form two Sections,

und 10, and provided wlzlir them with respect r. These sections aresecnred'ton gether so an to .form n. complete worin-wheel,

i phern-l adj uotment of The section 115 o vided with a. slot,'i

shaped ddjn 305 which enters and tapped holes prof the wormwheel inpro.- nlo which takes a., wedgesting-key, '117,tlieinolined fece ol'face ofc. groove or opening surface oi the ecc Set-screw, 1

provided therein.

that by turn the keyabutting ragainst 40 groove, will canse thev seooncentricel ion section 1 bears against the inclined outin the interiortion 114-, the key lli' being neouredin place and adj usted by merino oi o 3, which is received in e. reoeas ing said screw t The screw, beinglcrger'n dienioter than thelrey, will take into threedo" provided-on theopposite welle-of the alonso.

he inclined face ol' n like ieee of the ctio'n 114 to move l over theheb of ite comparir- 5, and thus the wormieeih of one section will becaused iolep slightly lieyond thone of the other, eo tlmt'the widtlrorcross-section of the teeth will creased end ondery or su their weer comloev thereby in#4 pensated for.

provided with e seo ppiementary indexi ng mechanism 2. En a.milling-machine,

with e spindle provided thereon ond e. wor

looee worin, of devices for eecnri l',55 tothe Spindle, ell onbste A3.,The combination, v.'

tially as described.

the combination,

with e wor-ingerir in ebelt having 'e ng the worin-geel' ntially asdescribed. ith c epindle helling a wormgenr loose thereon end devicesfor securing the worm-gear to the Spindle, ofen' index-nieto cti .o otheft ond worin,

e. A niilli etched lo the sp indie end e worannll substantially esdeeorihod, iochine heed provided with e. spindle,adopted rto rotatetherein, end herringv a worm-gear leone thereon, end devices forncwornrgenr to the spindle, cont n index-plete secured to the :innin--onring naid hined with e dleend o op ringnctiog ind en "cowl or catch'from, of a wornishaft 70 providing with ai revoluble spin- Awith a worm-wheel to or loosened therecarrying a worm engeging with seidworm-wheel,.whereby said spindle may be rotated either -worm and wheelor indeplendently thereof, eiibsrentiailyns described.

ing bearings for e. spindle end provided 'with e shoulder, of e spindle'having eworrowheel loose thereon, e retaining-nut, ce 76, :secured tothe spindle between the ehonlder of the 57, :substantially esdeserlbed.'

8..' TheemnbinetOmvWith o. rciiolnhle-spinon index-pletesecnred to seidspindle and a worinnhait carryin fi e worm engaging with seidworin-wheel, eolietentially es described'. -i '9. The combination, withehead-stock providedI with a. revolnble spindle, es 7l, having o,worinwheel adopted to be secured to or loosened therefrom, ondaworin-shaft carrying a .worm engaging with snidwormgear, ofen indenpleteneon red to seid Spindle end a pewl led to engage the index-plete,eulistcntiellyas described.'

ill. In n milling-machine, en exteriorlyvthreetdedepinelle-eretainingnut which isin- Aone end amdexteriorlylthretnled at theopposite ieriorly threaded it..

cod, encircling the epindle, a wheel encircling the ring, ornut..

and e, not which iecdnptcd. aedcscribed, to

engage .the oxteriorlylhreaded 'end of thereh tniningnnt, which et iteopposite end is intoriorly threaded, ellin combination.

lll'. .in e milling-machine, o retniningnnt which in interiorly threadedat one cnil and exteriorly threaded at the oppoeite end, and ywhich isennnlerly grooved and longitudinally slotted, nnhstnntielly andescribed. f '12. The combination, `with thehcadstock hearings forspindle 511i, the retainingmnt TG, the wormu wheel 23, and the ,not 57,Substantially es de scribed. i3. The combination, with n revolnblespindilo, ne 74, provided with e worin-wheel, of o, reteinlng-nnt, neit, :securing seid spindle in gees', nnhslnntinlly on descrilielt 7. Thecombination, with ahead-stock haw.

dle, as 7e, provided with e. worm-wheel adept-- ed to lieseeured to orloosened therefrom, of

e Spindle, ol theA through seid headetoclr and the yworni-wheel, and a.not, es

Y,'50, ite hearings, and providing o Beet for theworm I05 or locknnonntedon the headotook end adopt l il. The combination, with :Lrcvoluble spindle, ns 74, provided with aworni-wheel, o'f nretainingnnt, :is 76, for seeming the spindle' in its bearings,nndhaving .o conical huh pro- 5 viding e. seat for. the worniwheel,substantiolly as described. 15. The combination, with n revolnblespindle, as 74, provided with a worin wheel, of a retaining-nut, as 76,for securing the spindle' in its hearings, and lia-ving a. dividedln1b,snd a nut, as 57, for locking seid retaining-nut to .,the'spindle,substantially sdescribed.

16. Ine. millingifnachine, the ,combination of an eXteriorly-threadedspindle, 74, n rei aining-nut, 76, encircling-such spindle, e wheel, 23,encircling the retainingnutfamd a. nut-57,v

which encircles the exterorlythrended end of the retainingnnt 76,substsntinllyas described. l v

17. The combination, with a revoluble spindle, as 74, provided with a.worin-wheel, of a retaining-nut, as 76, for securing the spindle in itsbearings, and having e. conicnl divided hnb providing a. seat for hewornrwheel, and n nut, as 57, forlocking said retaining-nut to `thespindle and securing said worin-wheel to its seat, substantially asdescribed.

. `18. The combination, with a worni-wheeh' as 23, of e. revolnblespindle, as74, having' o coniei seat for supporting the worm-wheel, andn. nut, as 57, for securing said Worm wheel to the. shaft, substantiallyas described.

19. The combination, witha revoluble'spin` die, as 74, of theretaining-nut, 76, provided with n. split hnb, and a nut, 57, forclamping said huh to the spindle, substantially as described.

20. rl`hecombination, with a revolnble hol-v low spindle, as 74, mountedin bearings Vin the head stock of a lnilling-machine'and adopted toreceive and hold a chuck inserted within seid hollow spindle at one end,of an indexpl-.ite secured thereto, whereby the step-by. step movementsof the spindle and chuck are indicated and determined, nndadrnw-inspindle, es S7, inserted within the hollow spindle and adopted to engagewith and secure'said chuck to the spindle, substantially 'as deiscribed.

2l. The combination, with a rcvoluble hollow spindle, as 74, providedwith a worin wheel adopted to be secured thereto or loosened therefrom,a chuck, and n drawin spindle for holding said chuck within said hollow.spin- 3 die, of o. wfurnrshan.J and worm engmging with,

said worin-wheel, substantially as described.

22. The combination, with n. revolnble holl low'- spindle, as 74provided with n worinwheel adopted to be secured thereto or loos cned.thcrei'roi n, o. chuck, :ind a. drow-in spn die for holdinf.r saidchuck within said/hollow spindle, of o worm-shaft and worinY engagingwith sind worm-wheel and on i'ndefv plete secured to the .hollowspindle, substantially described.

23. The combination, with n revolnblc hol- 'low spindie. es 74,provided-wilh :i worinspindle,

einem .J r

wheel adopted to be secured 'thereto orlooscned therefrom, n ehi1ck,ondo. drew-in spindle for holding said chuck within said hollow` of nworin-shaft and worm engaging with. seid worm-wheel, on indexplatesecured to saidd'iollow spindle, sud a. pnwl adapted t0 engage theindex-plete, snbstnntielly ais described.y v

2e. The combination, with o. revoiuhle spindie, as Tc, provided withworm-wheel adapt'- ed to be secured to or loosened therefrom, sind anindex-plate secured to said spindlegOf a. worm shaft provided with nworm' engaging with said worm-Wheel, ond an index-plate se cured to snidslinft, substantially as described.

25. The combination, with a. revoluble .epin- -dle,as 74, provided withs. worm-wheel adapted `to be secured to or loosened therefrom, on m-.dex-platc secured to ,said spindle, and a. pnwi adapted to engagetheindexC-plate, of awormi shaft provided with .worin engagingwitliseidl worm-wheehan index-plate secured to said shaft, lond a pawladapted to engage with the i'ndex-plote, substantially as described.

26. The combination, witha revol-uble spindle, :is 74, provided with a.'worin-wheel, and n shaft provided 'with a. worm engaging with saidworm-wheel, ofen` indeitplate secured to said shaft,npawlengogingwthsaid 'indexplete, a yoke, as 45, supporting said pnwl.and.

' mi adjustableholdast-stu@ as 41, (orpi-eventing the yoke from rottingwiththe shaft or allowing it to rotanter therewith, substantiallyesdescribed.,v

27.. The combination, withe revoluble spinscid shaft and provided witho. bevel-wheel, a,

die, as 74, provided with a worm-wheel, 'a' shaft provided w'ith' ,aworm engaging with said worm-wheel,'and an indexplate secured to seidshaft,- oi' a. sleevens 46', surrounding" yoke, ns45., supported' upon`said sleeve, and'. pro vided with a paw-l foi' engagement with the indexplate, and connections with the .sind

bevelwheel for rotating the shaft-,substantially as described.

28. The combination, with the worm shed;

49, provided with .an indexlpln-te, `78,' of e sleevesnrronnding seidshaft end-provided with a. bevel-geni', a yoke, 45, supported by saidsleeve and having o paw-'l for engagement with the index-plate, and. anadjustable holdfast stud for securing seid yoke in position againstrevolving With-the indes-piste and wormshnft, substantially asdescribed.

2i?. The combination, with the'worm-shaft 49, provided'with 'onindexplete, sind usleeve surronndingnnd loos-e upon sind shaft andprovided with connections by. which it is rotated, of apewl engagingwith the index-.plate org a. yoke supporting seid'pewl'andmonnted uponthe sleeve, whereby said sleeve and shaft are vcoupled together,substnntinily as described. d l

30. In a millingmachine, the combination,

.with theshnftofe. wormdndexing mechanism, ot' s yoke which by its lowerextreniityis rig-i idly held upenn slceveby n nut, such sleeve V.terminating in a bevel-wheel which is revolu- ,5' the indexingmechanism, and to engage with the notches upon the periphery of -theindexplate, substantially as described.

31. In axnilling-inacl1ine, the combination,l

with ayo'ke which provides a seat fornpow'l. io of o. spring-seated pawiwhich is supported by seid yoke, and which is provided with a toothforengagement with the 'notches of an index-plate, the yoke and theindexplatc being supported upon 'the snmc bearing, sub'`| i 5 stantiallyas described.

32. 'The combination, with the yoke 45, carrying a pawi for engagementwith an index- 'plate, of-a holdl'ast-stud, 41, sented in the lhead'nn-d engaging with a recess in said yoke, 2o and provided with aspiral groove, and a setscrew, 40, taking' into said groove,substantially as described.

The combination, with a shaft, an indexplate'secnrcd thereto, itsengaging-pand, and

r a yoke carrying said pawl, and a sleeve-loose ,upon seid shaft 'andsupporting'said yoke, of an adjustable lroldlast-stl,u'l,"as 41,"'seatedin 'the head and adapted to seenresaid .yoke in n'lixed posit-ion, andto release the saine to permit the-shaft and sleeve to rotate together,

's ubstantialiyas describe 34.v TheA combination, vwiththe headstock70ot` the worm-shaltdi), the sleeve 47, which .is provided with ashoulder or recess engaged by e screw, und the nut 66, substantially asdescribell,l j l 35.71` e' combination, with the head -stock 70, havingthe bracket 105. of the worm-shaft 119, the sleeved; theenciijcling-yokc, and +o the holdingmntl 44 at thefouter end of saidsleeve, substantially las described..

336. The combination, with the bracket 105 .upon the headstock 70, ofthe wormshaft49,

the sleeve 46, the yoke 45, and the holding-v 45v nut 44, substantiallyas described.

37. The'ccmhination, with "the bracket 105- upon thehead-stock v70, ofthe worm'shaft 49,

the sleeve/16, terminating in a bevel-whcel, 24, the yoke 45, having arear recess, the holdo faststud 4I, and the holding-nnt 145,substantially as described. v y 38.- The combinatiomwith the bracket 105upon the head-stock 70, of the shaft 49, the yokefi, which -encirclesthe shaft and its sleeve, andthe holding'stud 41, which engages both thebracket and the yoke, substantially as described. I

, 39. The combination, with a spindle, 'as 74, of an indexplate nditshub secured thereto, 6o the indexplate being detachable therefrom in-.dependent ofv its hub, substantially es described. j

l). The indexing mechanism 39 3i', jointly withthe spindle 74,snbstantiallyas described. i v 4.1. vThe' combination,withahollowspindle, cs '74,tmd its chuck, .and having a drew-in"spindle, of4 an `imiexplnte and vits hub se v l v cured to said hollowspindle between it and thefhead' of the 'draw-.in spindlc,` the indcgrnplate vbeing detachable therefrom independent 7o of its hub,substantially as described.-

42. The combination, with the hollow spin dle 74, provided with a drawinspindle, and hav n; dbnl), as 37, secured to it, of an indexplnle, as39,inounted on said hub and de 7 5 tachablc therefrom, substantinllyasdescribed.

48. vThe combination, with a spindle, as 74, rprovided with a dividedworm-wheehns 23, of an :.ul'jlistimgr vkey, 117, lo'r adjusting thesections of said divided wheel with respect to 8o each other,substantially as described.

44. The combination, 'with a spindle, as 74, provided with a. dividedworm-wheel composed of two sections, 114 115, the former of "which isprovided with an inclined recess, 0i' S5 an adjusting-key, 11,7,provided in the section 115 engaging with saidA inclined recess of theother sect-ion, substantially as described.

. 45. The herein-described sector-arms 55 5d," the lanci-mounted on thehub ofthe other, 90 one of which is provided with n spring-seated stop,as 19, substantially as described.

+16. The combination, with n n index-plate, as 78, and itsengaging-pand, oi' sector-arms 55 and 56, one of which is provided witha 95 springsented stop, as 19, substantially as doscribed. .l

47. ln a milling machine, the combination, with a sectorarm in anindexingapparatus, the axis of the sector-arm being the axis 0E ICO theindexplate of the indexing apparatus, of" a spring-seatedv stop which ispivoted to such sectorinrm, whereby the stop is made operative when thesector is movcdin onedirection, substantially es described-` I 4.8.'`Ina. milling machine, the combination, with a worinfshzii'hof anindexingsecior which is applied to such shaft, and which is composedv oftwo arms, one of'which in its annular 0r axial portion is sleeved uponthe other, and UO is clamped thereto, and which has upon it a pivotalspringseated Stop, snbstantinlly as described.

49. In a. milling-machine, the combination, with a. bearing-shaft whichcarries an index I I5 plate, of a. yoke, one end of which encircles suchshaft, aspriug-pawloarried by said yoke, and a sector or d ividingapparatus which is 'sleeved upon such slmft,'one of the arms of thesector being provided with c stop which Il@ isadapted in the mannerdescribed to engage,

with the point of the spring-pawly when moved in one direction, and topass by the-sumel when-moved in the opposite direction, substantiallyasdescribed. l

50. In a milling-machine, the combination,

with a revoluble shaft upon which is an indexplate, of a yoke, one endoi' which encirelec .such shnft,and which carries et its' opposite 0ndaspring'pawi, und a sector or dividing 1,;0 mechanism which consists oftwo arms .which are sleeved together upon the shalt and are.securedthcreon by a screw, and one of'whioh carries e, swing-seatedstop, whereby, when seiner the'soctor is used in melting divisions, itwill be stopped et regular intervals by the spring# Pawl, substantiallyns described.

51. The combination, with o feed-table,.ns

` 9i), provided with a lateral feedi 11g-screw shaft having e.bevel-wheel,' es lll, mounted loose thereon, of thcclutches 3l', onemounted so as to'heve longitudinal movement on the shaft and the othersecured to said bevel-wheel, snhstantially ns described. A

52. The combination, with a. feed-table, as 90, provided with n lateralfeeding-screw shaft having-"2. bevellwheel, as 111, mounted loosethereon and carrying one part of a clutch, as

.30, of theclntch 3l, mounted so es to have 'longitudinal movement onseid shaft and secured to n rod, 32, for operatingit, snbstentielly asdescribed.

53.v The combination, with n feedtable, as 90, provided with e lateralfeedingecrew shaft having e bevel-wheel, os 111, mounted. loose thereonend carrying one port of a. clutch, .es 30, ofthe clutch 3l, mounted soas to have longitudinal movement on said shaft, and e' shifting-rod, es113, ond connections between it and scid clutch v 31 foropercting thesame,

substeintinll')7 ns described.

54. The combinatioinwith n feed-table, as' 90, provided with o leternlfeeding-screw having a bevel-wheel, es. 1.11, mounted loose there on andcarrying one port of a clutch, os 30, oi

the clutch 31, mounted so us to have longitudinoimcvemcnt on scidshaft-,its rod 32, connecting-her 28, and shifting-rod'll, sub-lstantially i iis described.

55'. The combination, with a feedinble, as 9i), provided with e lateralfeeding-screw shaft having e bevel-wheel, os 11,1, mounted loose thereonand carrying one Apart of o clutch, as 30, of the clutch 31, mountedsoins to have longitudinal movement on scid shuin'nndn shiftingrcd, es113, and connections between it und scid clutch 31, for operating theseine,

and n. stop, 14, cooperating with en arm provided on said shii'tingd'od,'substont-ieliy-ns described.

56. The combinotion, with a feedtnble, of supporting studs or guideswhich are attached to the feedteble, o shifting-rod which is adapted toslide in the stnd erguido-supports, .and a shifting-lever which has itsfulernin in the body of the feed-table,(substantially as deis providedwith o caf'vity, of e shifting-rod is applied upon the cllutch,substantially as desmribed. A y

59. The con'lbinntion,with n feed-table which nd a. shiftingflever whichengages with the ca vity in the feed-table, substantially ns described.

d0. 1n a. milling-machine, the Vcombination of n feed-'table 90, nshifting-le'ver, 26, on exteriorsbifting-rod, 113, a. connecting-crm, 28,-'which is connected .to the shifting-rod, and c sliding c lntch-shoi`t,32, which is revoluble in one endof the connecting-erm, substantiallyosdescribed'. 1

61. In n in illingmachine. the 'combination teriorshil'ting-rod, 113, e.connecting-crm, 28, which is'attnehed to the shifting-rod, and o.siidable clutch-sholt, 32, which is revolnble in one end of theconnecting-arm, substantially as described. 62. The combination, withvtho body of n' milling-machine, ol' n pi'voted stop which is secured tosuch body, und which is adopted, as described, to engage with 'nprojection upon the shiftingrod of the 'machine when the feedtable ismoved in one direction, and to fall Vand vpermit unrestricted movement'when the i'eedtabl e is moved in the opposite direction, subsfantinll yes described-.1l 63. In e niiliingdnochine, the combination `of thepivoted or Swiveledetop 14, se'oured to a fixed -portion of themnchine,with the shift ing-rod 113. provided with anndjnstable stop,

1 5, substantiel] y as described, wherebylniovenient of the feed-tablein one direction `mcybe limited, while in the opposite direction .itwill be unrestricted, substantially es `described.

64. A. tail-stockwhich' is' provided with a.

vcontrai slot, u circuler; or other shaped longi-f tudinol horizontalopeningot .thelower extremity of the slot, and n ciampi ng-serew'wbiohengages with both sections oi' the tail-stock, substantially esdescribed. r

6,3. The combination, with n verticallyelotted toil-stock, of a spindlewhich 'is engaged directly by the walls of the slotted portion of thetoil-stock,- snbstnntinlly as described.

66. "The combination, with e vertically-slot- 'of el feedtchle, 90, ashift-ing-lover,. 26,fan exl llo ted tailstock, of e. spindle whichisiiolttened .l upon its surface, and-which is engaged directly by theslotted portions 'of the toibstock, suba stantielly as described.

- 67; The combination, with o. vertically-slotted tail-stock, of n'spindle which is engaged directlyby the wells of ,the slotted portionof the toil-stock, ond n clamping-screw which entends through one of thevertical portions of the tailstoclc ond engages with the other verticalportion, substantially es described. I

68. The herein-described tnil-stock 60, prolv l lvided with o; curvedsent for the tail-stock opindle,the central longitudinolfslon 6i, itsopening 68, and a, binding screw or bolt, 65, substantially es' decori 169. The combin. with a tail-stock,'60,

provided with a curved seat in its upper por- 5 'ted tail-stock, ofatal-stoe'k Spindle, a central adj listing-screw whiehcngagcs with suchepindie, and a ciampi ng-serew/which extends cross- .3 wise through thetwo sections ofthe tail-stockand holds the tail-stock siii ndlerigidl yi n place,

lo-siibstantially as describ d.

71. The combination, with-fthe tail-Stock provided wit-h a curved seat,a central longitudinal slot, and a binding screw or bolt, 65, of a.spindle, 61, adapted to hold ai'apen 1 l; shanked center, and providedwith dependingbil'urcated end 62,and an adj listing-screwenfgaging-therewith, substantially as described;

l72. The combination of a spindle which is provided with a perforationwhich is adapted o tov/receive n. securing-key, a device for holding thework which is to be operated upon, which device is provided. with ashalloWslo-tfav secnring-key which is adapted to engage with is adapted,in the manner described, to hold the keyin its piace, substantially asdescribed.

73.' In a millingmachine, the combination, with thefeedserew 95, of thecross-feed slide, the feedscrew being provided `with a shoulder, 1l, ofa screwsleeve or adjusting-screw, 10, which encircies the shaft endofthe screw, and an interiorly-threaded plate,94, through which thescrew-sleeve 10 is adjusted, substantially as de'sxcribed.v

74. The herein-described spring-chuck, therada-l slits whereof terminatein enlarged slots-l 21, substantially as described.

` VICTOR H. ERNST. vWitnesses JOHN H. McCULLoUeH, OTTO ERNST.

yt-he perforation in the spindle and with the slot in the work-ho1dingdevice, and a screw which

